EP 1322952 B1 20060426 - STEAM TURBINE INLET SLEEVE INSPECTION APPARATUS AND METHOD
Title (en)
STEAM TURBINE INLET SLEEVE INSPECTION APPARATUS AND METHOD
Title (de)
VERFAHREN UND VORRICHTUNG ZUR DAMPFTURBINENEINLASSHÜLSENINSPEKTION
Title (fr)
APPAREIL ET PROCEDE D'INSPECTION DU MANCHON D'ADMISSION D'UNE TURBINE A VAPEUR
Publication
Application
Priority
- US 0142268 W 20010924
- US 66978300 A 20000925
Abstract (en)
[origin: WO0225241A2] An inspection apparatus (40) for remote inspection of the trepan radius area (34) of the inlet sleeve (24) of a steam turbine (10). The apparatus (40) provides a sealed volume (50) between a pair of inflatable bladders (46,48) for the introduction of a liquid couplant for the immersion of ultrasonic transducers (42,44). A laser line generator (62) generates a beam of light visible through camera (60) which impinges upon the inlet bell seal (30) when the apparatus (40) is in a proper inspection position within the inlet sleeve (24). Guide vanes (56) provide centering and generate an insertion force during air assisted insertion of apparatus (40). Transducers (42,44) are indexed axially and circumfretially by the independent rotation of axial drive gear (72) and longitudinal drive gear (70) engaged with a pattern of gear teeth (69) formed as a combination of circumferential spur gear teeth and axial rack gear teeth cut into a single surface of a spline shaft (68).
IPC 8 full level
G01N 29/22 (2006.01); G01N 29/26 (2006.01); G01N 29/265 (2006.01); G01N 29/28 (2006.01)
CPC (source: EP US)
G01N 29/225 (2013.01 - EP US); G01N 29/265 (2013.01 - EP US); G01N 29/28 (2013.01 - EP US); G01N 2291/044 (2013.01 - EP US); G01N 2291/2636 (2013.01 - EP US); Y10T 74/19674 (2015.01 - EP US); Y10T 74/19949 (2015.01 - EP US); Y10T 74/19953 (2015.01 - EP US); Y10T 74/19958 (2015.01 - EP US); Y10T 74/19963 (2015.01 - EP US)
Designated contracting state (EPC)
DE FR GB IT
DOCDB simple family (publication)
WO 0225241 A2 20020328; WO 0225241 A3 20030123; AU 9689301 A 20020402; DE 60119144 D1 20060601; DE 60119144 T2 20061214; EP 1322952 A2 20030702; EP 1322952 B1 20060426; US 6487922 B1 20021203
DOCDB simple family (application)
US 0142268 W 20010924; AU 9689301 A 20010924; DE 60119144 T 20010924; EP 01977803 A 20010924; US 66978300 A 20000925